* (Music) A low-pitched voice part in vocal music, typically between tenor and soprano.
* (Music) An instrument that plays in the alto range, such as an alto saxophone or alto clarinet.
* (General) A person with a low-pitched voice.
For example, you might see "altos" used in a sentence like this:
* "The choir was made up of sopranos, altos, tenors, and basses."
If you are seeing "-altos" in a different context, please provide more information so I can help you understand its meaning.